The political scientist Samuel Huntington, whose controversial book predicted conflict between the West and the Islamic world, has died at the age of 81.
In his 1996 The Clash of Civilisations, Mr Huntington divided the world into rival civilisations based on mainly religious traditions.
He said competition and conflict among them was inevitiable.
The scholar taught at Harvard University for 58 years, and also served in the White House in 1977 - 1978 under President Jimmy Carter.
